單項選擇題
A.One B.Two C.Four D.Three
A.Very long B.Ten thousands of miles C.Thousands of miles D.Thousands of kilometers
A.In international deep sea B.In lakes C.In river and canals D.Coastal ocean
A.Speed is important B.Speed is not the most important C.Speed is mainly important D.Speed is first importan
A.Raw materials B.Heavy, bulky and low value commodities C.Semi-processed D.Great amount goods
A.2 B.3 C.4 D.Not available in the paragraph
A.100 tons B.Not clear C.More than 100 tons D.I don’t know
A.Separately B.In same level C.In the lower part D.Not mention here
A.Less than 1% B.Lowest C.Lower D.Low
A.The high value B.Low density or weight C.A and B D.Shortest time to transport
A.Quick but not safe B.Less frequency C.It can’t lift heavy goods D.The highest cost in all transport modes